SEOUL, Dec 25 (Reuters) - North Korean leader Kim Jong Un observed construction of a submarine with his daughter, a potential heir, and oversaw the test-firing of long-range surface-to-air missiles, state media reported on Thursday.
Wednesday's missile test near the east coast, aimed at assessing the nuclear-armed country's strategic technology for developing a new type of high-altitude missile, destroyed targets in the air from 200 km (120 miles) away, KCNA said.
